Invention Grant
- Patent Title: Systems and methods for controlling a refrigeration system
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Application No.: US16326895Application Date: 2017-08-22
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Publication No.: US11359847B2Publication Date: 2022-06-14
- Inventor: William L. Kopko , Stephen M. Zardus , Israel Federman , Curtis C. Crane , Todd Kwao-vovo
- Applicant: Johnson Controls Technology Company
- Applicant Address: US MI Auburn Hills
- Assignee: Johnson Controls Technology Company
- Current Assignee: Johnson Controls Technology Company
- Current Assignee Address: US MI Auburn Hills
- Agency: Fletcher Yoder, P.C.
- International Application: PCT/US2017/048048 WO 20170822
- International Announcement: WO2018/039254 WO 20180301
- Main IPC: F25B49/02
- IPC: F25B49/02 ; F25B25/00 ; F25B23/00

Abstract:
A refrigeration system includes a heat exchanger configured to place a cooling fluid in a heat exchange relationship with a working fluid, a free-cooling circuit having a pump configured to circulate the working fluid through the heat exchanger and a condenser, a flow control valve configured to control a flow rate of the working fluid to the condenser, a condenser bypass valve configured to control a flow rate of the working fluid that bypasses the condenser, and a controller configured to adjust a position of the flow control valve, a position of the condenser bypass valve, a speed of a fan of the condenser, a speed of the pump, and a temperature of a heater based on an ambient temperature, a temperature of the working fluid leaving the condenser, the position of the flow control valve, the position of the condenser bypass valve, or a combination thereof.
Public/Granted literature
- US20190186801A1 SYSTEMS AND METHODS FOR CONTROLLING A REFRIGERATION SYSTEM Public/Granted day:2019-06-20
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